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A 0.4-mW/Gb/s Near-Ground Receiver Front-End With Replica Transconductance Termination Calibration for a 16-Gb/s Source-Series Terminated Transceiver

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11 Author(s)
Kaviani, K. ; Rambus Inc., Sunnyvale, CA, USA ; Amirkhany, A. ; Huang, C. ; Phuong Le
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This paper describes a low-power receiver front-end in a bidirectional near-ground source-series terminated (SST) interface implemented in a 40-nm CMOS process, which supports low-common mode differential NRZ signaling up to 16-Gb/s data rates. The high-speed operation is enabled by utilizing a common-gate amplifier stage with replica transconductance impedance calibration that accurately terminates the channel in the presence of receiver input loading. The near-ground low-impedance receiver also incorporates common-mode gain cancellation and in-situ equalization calibration to achieve reliable data reception at 16 Gb/s with better than 0.4 mW/Gb/s power efficiency over a memory link with more than 15 dB loss at the Nyquist frequency.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:48 ,  Issue: 3 )

Date of Publication:

March 2013

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